APPENDIX— CRUSTACEA. 121 



CRUSTACEA. 



PODOPHTHA LMIA. 

 By EDW. J. MIERS, F.L.S., F.Z.8. 



The Podophthalmia collected by Mr. Whvmper in Ecuador comprise only 

 some half-dozen species, but among these the specimens of Pscudothelphusa 

 macropa are of special interest, on account of the high altitude at which 

 they were obtained. The small Crayfish which, according to Prof. Orton, 

 abounds in the stagnant waters about Quito,i does not occur in Mr. Whym- 

 per's collection. 



Upon tlie whole series obtained it may be observed, that the species which 

 have rewarded Mr. Whymper's search are less numerous than might with 

 reason have been anticipated. Even if account be taken solely of terrestrial 

 and fluviatile forms, some additional Thelphusidea or tertestrial Palmnonidce 

 might have been expected to occur in the Collection. It should, however, 

 in justice to Mr. Whymper, be noted that Prof. Ortnn (I.e.) says the Crayfish 

 above referred to is, he believes, the only Crustacean inhabiting the Quito 

 valley. Species of this class are therefore, probably, scarce. 



1. Pseiidotluiphum. macropa. (Figs. A, B.) 



Boscia macropa, M. Edwards, Ann. Sci. Nat. (3me serie), Zool. xx, p. 208 

 (1853); Arch. Mus. d'Hist. Nat., vii, p. 175, pi. xii, fig. 3 (1854). 



Pneudothdphusa ■macropa, S. I. Smith, Trans. Connect. Acad., ii, p. 146 

 (1870). 



Hab. Milligalli (6200 feet) ; Plain of Tumbaco (7850 feet). Five ex- 

 amples. 



Four small females are referred to this .species, obtained at Milligalli, 

 which according to Mr. Whymper's information is about 39 miles by road 

 from Quito, and about 6000 feet above the sea ; and also an adult but small 

 female reported to have been taken on the Plain of Tumbaco, about three 

 hours north of Quito, and 7850 feet above the sea. This, the largest example, 

 measures as follow-s : — Ad. 9 5 length of carapace about 7 lines (15 millim.) ; 

 breadth of carapace about 12 lines (25 millim.). I subjoin a de.scription of 

 these specimens. 



Carapace transverse, its greatest width about 1^ times exceeding its 

 length ; depressed and nearly flat on the dorsal surface, which is finely 



' Ainericau Naturalist, vi, p. 650 (1872). 

 R 



