. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. LYSIANASSIDAE 7i Occurrence: 2. 3- 4- 5- 6. St. MS 68. South Georgia. 2 <$<$ 7-7-5 mm., 2 $$ 9-10 mm., 1 ovig. $ 13 mm., 2 juv. 5 mm., from pharynx of Ascidian. St. 39. South Georgia. 1 ^8mm.,2 $$ 10mm., 6ovig. $$11-13 mm., Z4JUV- 5-6mm. St. 42. South Georgia. 2 $$ (1 ovig.) 9 mm., 1 juv. 6 mm. St. 45. South Georgia. 59 specimens 5-14 mm., a few $<$ and juv. mostly $$ incl. some ovig. St. 123. South Georgia. 3 <$<$ 7-5-8 mm., 28 $? (1 ovig.) 9-13 mm., 7 juv. 3-8 mm., from branchia
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. LYSIANASSIDAE 7i Occurrence: 2. 3- 4- 5- 6. St. MS 68. South Georgia. 2 <$<$ 7-7-5 mm., 2 $$ 9-10 mm., 1 ovig. $ 13 mm., 2 juv. 5 mm., from pharynx of Ascidian. St. 39. South Georgia. 1 ^8mm.,2 $$ 10mm., 6ovig. $$11-13 mm., Z4JUV- 5-6mm. St. 42. South Georgia. 2 $$ (1 ovig.) 9 mm., 1 juv. 6 mm. St. 45. South Georgia. 59 specimens 5-14 mm., a few $<$ and juv. mostly $$ incl. some ovig. St. 123. South Georgia. 3 <$<$ 7-5-8 mm., 28 $? (1 ovig.) 9-13 mm., 7 juv. 3-8 mm., from branchial chamber of large Ascidian. St. 149. South Georgia. 1 $ 7 mm., 12 $$ 10-12 mm., from branchial chamber of Fig. 29. Orchomenella macronyx, Chevr. a. Telson. b. Profile of epistome and upper lip. c. Gnathopod 1, with palmar denticles further enlarged, d. Gnathopod 2 (setae omitted), e. Uropod 3 with part of margin further enlarged. Remarks. These specimens are evidently the adults of Chevreux's species. As Chilton remarks in the Scotia specimens, the eye is narrower oval than in Chevreux's figure, and in the adult widens slightly below. The 4th and 5th side-plates are as figured by Chevreux (fig. 7 D, C). The transverse depression is present on pleon segment 3, and the profile of segment 4 is quite cha- racteristic. The telson has a narrow slit between the rather broadly rounded lobes, which appear to be quite unarmed. The 1 st joint of antenna 1 is very plump and gives a rounded appearance to the front of the head. Epistome slightly convex, but not prominent. Gnathopod 1, 6th joint short and stout, palm well developed, transverse, with two small spines at angle and set with a series of little straight processes, some of which are often bifid or fimbriate, with spaces between them. Gnathopod 2, 6th joint oblong, widening distally, minutely chelate, the finger short and stout. Peraeopod 3, 2nd joint considerably more expanded than in Chevreux's figure. It is not confin
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
