176 Mr. A. White on some new genera of Crustacea. 



north during the summer. In the stomach I found the remains 

 of winged insects (beetles), ants, &c. I have only had opportu- 

 nity to compare the specimens I brought home with a single 

 young European one, but I found a perfect conformity. The 

 white borders on the tail however were rather different on all the 

 specimens I have seen. The Bengalese name is Tuntuni, or the 

 more correct one Dhundhuni, which is also used for some other 

 common birds. 



16. Phcenicornis peregrina, Boie. — Parus peregrinus, Linn. Syst. 

 Nat. xii. 342 (? an $ ). ^Mus. Carlss.,G*m., Lath. Parus malabaricus, 

 Gm., Lath, ex itinere Sonnerati. Parus coccineus, Gm. Motacilla 

 cinnamomea, Linn., Gm. Muscicapa flammea var. b, Lath. L'Oranor, 

 Levaill. Ois.Afr. 155 (e Ceylon). 



Saturate cinerea, ventre albo, remigibus apice imraaculatis. <^genis 

 colloque antico nigris, pectore uropygioque fulvo-aureis, rectricibus 

 utrinque 4 valde gradatis, extrorsum oblique luteis. Alse nigra?, 

 vitta angulata lutea, e basi pennarum cubitalium et fascia media in 

 primariis 6 ultimis. Long. 6 poll., ala 68 raillim., tarsus 15 (Cal- 

 cutta 1 Maii). 



°. seu $ jun. ? pallidior collo antico cum regione rostri albidis, 

 pectore flavescenti tincto. Uropygium, fascia alarum et latera caudse 

 ut in mare, sed dilutiora. (Mus. Stockh.) Rostrum validum, acute 

 carinatum. Nares membrana parva fornicata tectse. Vibrissa? parvse. 

 Lingua crassa, late oblonga, planata, apice lacera, non bifida. Hsec, 

 ut fascia alarum, pictura uropygii et laterum caudse toti generi com- 

 munia sunt. 



This splendid little bird does not seem to be common about 

 Calcutta ; I saw it only once. In its actions as well as colour it 

 bears a great resemblance to Sylvia phamicurus, as was even vi- 

 sible in the wagging of its tail. It had insects in its stomach ; 

 I heard no sound from it. The Bengalese name given me was 

 Pawi. 



[To be continued.] 



XXI. — Notes on four new Genera of Crustacea. By Adam 

 White, M.E.S., Assistant in the Zoological Department of 

 the British Museum. 



[With a Plate.] 



Family Pinnotiierid^e. 



Xanthasia, White. This genus is distinguished from Pinno- 

 theres by the extreme roughness and irregularity of the upper 

 surface of the carapace, the extreme bulging of the tail in the 

 female, which has a wide prominent rounded keel down the mid- 

 dle ; the legs are short and cylindrical ; the claws thick, hooked 

 and sharp-pointed. The front of the carapace projects, and on 



