162 PERCY SLADEN TRUST EXPEDITION 
69. Picaultia pronotalis, sp. n. (Plate 11, fig. 19). 
Apterous form, ?. Black; anterior transverse fascia to pronotum, margins of con- 
nexivum, and legs ochraceous; apices of femora, the tibize and tarsi more or less 
infuscate ; antennze brownish-ochraceous, longly pilose, first joint a little longer than 
second, third and fourth almost subequal in length; pronotum centrally longitudinally 
carinate, the whole body more or less pilose. 
Long. 2 mm. 
Loc. Seychelles. Silhouette: Mare aux Cochons plateau, over 1000 feet, 
VIII.—IX. 1908. All the specimens received are apterous and the mature form has 
yet to be described. A female specimen is figured. 
70. Microvelia repentina, Dist. (?) (Plate 11, figs. 20, 21). 
Microvelia repentina Dist., Faun. Brit. Ind., Rhynch., xi. p. 174, fig. 127 (1904). 
Apterous form, ¢. Black; pronotum castaneous, with a large black spot on each 
anterior lateral margin, and a transverse ochraceous fascia near anterior margin; legs 
ochraceous, the apices of the femora and the tibiz more or less piceous (Plate 11, 
fig. 20). 
Apterous form, §. Head and pronotum castaneous, posterior pronotal area ochra- 
ceous ; abdomen above black, connexivum and legs ochraceous; apices of femora and the 
tibize more or less infuscate (Plate 11, fig. 21). . 
Long. 15 mm. 
Loc. Seychelles. Mahé: country above Port Glaud, about 500—1000 feet. 
Silhouette : Mare aux Cochons plateau, over 1000 feet. Calcutta, Madras. 
This species, which I originally described from Calcutta, I have since received from 
Madras, collected by Capt. W. S. Patton, I.ML.S., in all its stages of development. 
Although I have not seen the imago from the Seychelles, this collection still contains 
numerous immature specimens which I cannot differentiate from those which I received 
from Madras and which are here figured. The mature form which I described and 
figured had the legs nearly uniformly ochraceous, but I have since seen many specimens 
from Calcutta and Madras in which the apices of the femora and the tibize were infuscate 
or piceous. 
Subfamily Gerrine. 
Division Gerrinaria. 
Mr Scott's collection only contains the two species previously recorded. 
71*. Gerris (Limnogonus) cerevventris, Sign. 
Gerris cereiventris Sign., in Maillard, Notes sur Vile de la Réunion, Ins., p- 30 
(1862). 
Loc. Seychelles. Silhouette: marshy plateau of Mare aux Cochons, over 1000 feet, 
and rivers near coast. Mahé: from near Morne Blanc; marshes on coastal plain of Anse 
