BUDDE-LUND— TERRESTRIAL ISOPODA 385 



Oculi parvi ; ocelli pauci, numero c. 6, quorum solum bini pigmentati. 



Antennae corporis dimidium longitudine subtequantes ; scapi articuli tres priores inter 

 se lonuitudine subsequales, articulus 4 sesqui longior quam articulus 3 ; flagelli articulus 

 prior altero fere triplo brevior. 



Processus frontales laterales parvi, obliqui ; epistoma convexum cum fronte paulum 

 productum, infra inter antennulas linea transversa sinuata carinatum. 



Trunci segmenta duo priora margine posteriore curvato, segmentum 3 margine 

 posteriore subtransverso. 



Caudee segmenta 3, 4, 5, epimeris brevioribus et latioribus. 



Telsum breve triangulum, epimera segmenti 5 vix superans, plus duplo latius quam 

 longius*, lateribus late incurvis*, apice acutiore. 



Unicolor, alba. 



Long. 2-8 — 3 mm. Lat. r2 — 1-3 mm. 



Distribution. Venezuela. 



Alloniscus (Budde-Lund (l), p. 224), Dana, Pr. Ac. Philad. vol. vii., p. 176, 1856. 



29. Alloniscus pigmentatus (Plate 22, fig. 7). 



Alloniscus pigmentatus Budde-Lund (1), p. 227 ; (5), p. 297, Taf. 15, figs. 28—38. 



Chagos Archipelago : Coin, Peros, three ; Egmont, eight specimens. Farquhar, 

 four specimens, 30 Sept. 1905. Providence, six specimens. Desroches, one specimen. 

 Aldabra Isl. (H. P. Thomasset). Mahe (Mus. Paris). 



This species is very common in Madagascar, and is found in many localities in the 

 East Indies. 



I give a figure of the exterior lobe of the first maxillse, because I have seen that it 

 bears a little appendix not before obsei'ved. 



30. Alloniscus pallidulus. 



Alloniscus pallidulus Budde-Lund (l), p. 228, 1885. 



Anomcdoniscus ovatus Dollf (1), p. 187, text-fig. 2a, h,c, 1893. 



Distribution. Seychelles : Mahd (Ansa Royale) sec. Dollfus I.e. 



I have not seen specimens of this species from Seychelles, but I have no doubt that 

 the specimens described by Dollfus as Anomaloniscus ovatus belong here. 



Alloniscus pallidulus is very common in Madagascar; I have seen specimens taken at 

 " Fort Dauphin," " Vynang du Maramboro," " Tamatave," " bords de la Tarasy," " pres du 

 lac d'Anongy," " Androhomana dans grotte," "Bale d'Antongil cote Est" (M. Ch. AUuaud 

 in Mus. Paris), at Isl. Ste. Marie (Professor Voeltzkow in Mus. Berlin), at Tamatave (Herr 

 A. O'Swald in Mus. Hamburg). One specimen taken at Fort Dauphin has an extra- 

 ordinary size, 19 mm. long by 12 mm. broad. 



A third species, Alloniscus brevis Budde-Lund, has been taken at the Comoro Islands 

 (Budde-Lund (5), p. 298, pi. 15, figs. 39, 40); the other species of this genus are indigenous 

 in the East Indies and Australasia. 



* Fig. 6 ill pi. 22 does not agree with those cliaracters. 



49—2 



