Miss G. Ricardo on the Asilidee. 169 
Olivaceous ; dorsal with alternate series of pale and dark 
spots. 
Upper Congo. 
Three specimens, 110 to 225 mm. in total length, from 
New Antwerp and Stanley Pool. 
7. Tylochromis polylepis. 
Pelmatochromis polylepis (Bouleng., 1900), Bouleng, Cat, Afr, Fish. iii. 
p. 382, fig. 258 (19165). 
Well distinguished from its congeners by its smaller scales 
(55-60). Pharyngeal dentition nearly as in 7. /abrodon, 
but teeth still larger. 
Total length 300 mm. 
Tanganyika. 
8. Tylochromis mylodon, sp. n. 
= Gy lateralis (part.), Bouleng. Cat. Afr. Fish. iii. p. 385 
915). 
™ Depth of body 2 to 23 in the length, length of head 8. 
Diameter of eye 34 to 44 in length of head, interorbital width 
34 to 33. Teeth small; maxillary not extending to below 
eye; three series of scales on cheek ; 17 or 18 gill-rakers on 
lower part of anterior arch ; lower pharyngeal a very strong 
plate, almost covered with large, rounded, blunt teeth. 
Dorsal XIV 14; spines subequal from fifth or sixth ; last 2 
or a little less than 2 length of head. Anal III 7; third - 
spine 4+ or a little less than 4 length of head. Pectoral 
longer than head, reaching anal. Caudal peduncle longer 
than deep. 40 or 41 scales in a longitudinal series, 7 from 
first dorsal spine to lateral line, 27 to 29 in upper lateral 
line, 34 or 35 in lower, 2 between lateral lines. 
Olivaceous, with six dark cross-bars ; fins unspotted. 
Lake Mweru. 
Two specimens, 115 and 235 mm. in total length. 
XXIII.—Notes on the Asilide : Sub-division Asiline. 
By Grrtrupve Ricarpo. 
Promacuvus, Loew. 
Linn. Ent. iii. p. 390 (1848). 
Trupanea, Macq. Dipt. Exot. i. (2) p. 207 (1888) [preoce. Schrank, 
Dipt. (1803). 
This large genus is very largely represented in. the South 
African Region, and probably many more new species will 
Ann, & Mag. N. Hist. Ser. 9. Vol. v. 12 
